1190 



FAMILY LIII. CriRYSOMELID.E. 



twice as wide as long, narrowed in front, margins narrow ; dislv convex, 

 smooth, sliining. Elytra slightly wider than thorax, hiuneri almost oh- 

 literated; surface distinctly, tinely ;\nd ratlier closely punctate. Length 

 5.5-7 mm. 



L)nl)ois, Ci';iwfoi-(l and Kponcer counties; scarce. ^lay 10-Jnue 

 22. Swept fi'oni low licrlis alono- roadsides and from flowers of wild 

 liydrang-ea. Horn gives its range as North Carolina to Texas. A 

 member of the Austroriparian fauna. 



2198 (G957). Disonycha triangularis Say, Journ. I'hil. Acad. Nat. Sci., 

 IV, 1824, 84; ibid. II. 22(). 



Oval, rallier depressed. Blaclv ; thorax above and beneath yellow, with 

 the front pair of spots muud. the hind one linear; elytra with a faint 

 l)luisli tinge; antenna' piccnus. tlu' tliree basal joints pale beneath. Tlio- 

 rax more than twice as wide as long, sides feebly curved, margins very 

 narrow, surface alutacenus, rather tinely, not closely punctate. Elytra a 

 little wider at base than tliorax. surface ratlier closely but distinctly punc- 

 tate. Length 5-0.5 mm. (Fig. 521.) 



Throughout the State, frequent ; more so in the northern coun- 

 ties. April 17-Octoher 2:3. Occurs beneath logs in spring. Adults 

 said to he injurious to heets and spinach. Occurs especially on 

 Chenopodium and other herbs in moist places. 



Disonycha xanthomel.ena Dalni.. Analecta Ent., 182:!, TU. 



Kesembles the preceding but 

 usually smaller and more oblong. 

 Thorax entirely yellow; elytra 

 black with f;iint greenish tinge; 

 abdomen wlidlly yellow, meso 

 and metasterna black; femora 

 usually yellow on basal half. 

 sometimes wholly black; tibite 

 and tarsi luceous. Thorax not 

 twice as wide as long, surface al- 

 most smooth. Elytra wider at 

 base tlian thorax, surface tinely 

 ;ilut;iceous. ol)soletely and very 

 liiicly punctate. Length 4.5- 

 5.5 mm. (Fig. 523.) 



Throughout the State ; fre- 

 ((uent. February 14-Novera- 

 l)er 8. Hibernates beneath 

 mullein leaves and rubbish. 

 Known as the "spinach flea- 

 beetle" on account of its in- 

 jury to that plant. Feeds 

 ' also on (J li c n o p o d i u m and 



*2109 (6958). 



. :a ^,ii .liti, ."C:;. X.IO. (Alter Korhos.)* _; 



chickweed, SteUana 



Listed as colJaris Fabr. 



